Determine whether the following statements are true or false. Explain your choice.

(a) A binary liquid mixture contains species a and b. The two species are completely miscible at all temperatures that they exist in the liquid phase (i.e., they just form one liquid phase). This result means that the unlike interactions are stronger than the like interactions.

(b) A binary liquid mixture contains species a and b. Over a range of temperatures, the two species separate into two distinct liquid phases. This result means that the unlike interactions are weaker than the like interactions.